摘要
本文从Boltzmaun方程出发,采用有限体积KFVS(Kinetic flux-vector splitting)方法,对微观粒子的速度分布进行组合,给出了模拟河道洪水演进时干湿交界处移动边界的一种新方法。并成功地模拟了大坝下游为干河道的一维溃坝模型,通过和精确解的比较得出,此方法在处理河道移动边界问题上是成功和有效的。
Based on Bohzmann equation a new method of finite volume, namely kinetic flux-vector splitting(KFVS), for simulating the moving boundary in propagation of flood wave in shallow water is proposed. In the method the distribution of particle's velocity axe assembled. The method is applied to calculate the 1-D dam-break wave. The comparison of the calculation result with that of classical solution shows that the proposed method is effective.
出处
《水利学报》
EI
CSCD
北大核心
2005年第12期1470-1474,共5页
Journal of Hydraulic Engineering
基金
国家自然科学基金资助项目(70271069)
关键词
BOLTZMANN方程
浅水方程
有限体积KFVS方法
移动边界
Boltzmann equation
shallow water
wave propagation
finite volume
kinectic flux-vector splitting(KFVS) method
moving boundary